http://transistorclock.com/ has a very interesting (though a bit expensive)
kit for sale. A 10" x 11" circuit board sporting nearly 200 transistors and
600 diodes to drive six seven-segment displays. Suitable for framing... As
delivered runs on 60hz but there is a note about conversion to 50hz mains. You
can buy a bare board, just the components or a full kit.
You must see it to believe it!
Tom
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